MKSI MKS INC
Price Chart
Executive Summary
Three MKSI insiders, including the CEO and CFO, sold a combined $6.34M in open-market sales over a 7-day window. The CEO and CFO both sold on May 22 at $315.48, accounting for $5.93M of the total. At $21.7B market cap, the cluster represents ~0.03% of market cap — well below the 0.1% materiality threshold — making this a routine, liquidity-driven event despite the C-suite participation.
Key Financial Metrics
Actionable Insight
The dollar amount is immaterial relative to MKSI's $21.7B market cap. CEO/CFO co-selling on the same day is likely driven by shared blackout-window opening or 10b5-1 plan timing, not a coordinated bearish view. Monitor for any material adverse news in the next 8-K, but this cluster alone does not warrant action.
Key Facts
- CEO Lee John Tseng-Chung sold 10,000 shares for $3.15M on May 22, 2026
- CFO Mayampurath Ramakumar sold 8,810 shares for $2.78M on May 22, 2026
- Director Peter Cannone III sold 1,400 shares for $410K on May 18, 2026
- Total cluster value of $6.34M represents ~0.03% of $21.7B market cap
- All three transactions were open-market sales (code S)
Financial Impact
Total insider sales of $6.34M, or ~0.03% of market cap — trivial relative to company size
Risk Factors
- CEO and CFO selling simultaneously could be misinterpreted by the market as a negative signal
- If a material adverse event emerges in the next 30 days, these sales may be viewed as informed in hindsight
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MKSI-1779819559345 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 8, 2026
6d ago
|
Insider Cluster
| $318.94 awaiting T+1 | awaiting T+1 | — | $355.69 (+11.52%) |
|
Jun 2, 2026
12d ago
|
Insider Cluster
| $329.66 $334.97 | ▲ +1.61% | ▲ +2.33% | $355.69 (+7.90%) |
|
Jun 2, 2026
12d ago
|
Insider Cluster
| $329.66 $334.97 | ▲ +1.61% | ▲ +2.33% | $355.69 (+7.90%) |
|
May 28, 2026
17d ago
|
Insider Cluster
| $323.41 $322.60 | ▼ −0.25% | ▼ −0.49% | $355.69 (+9.98%) |
|
May 28, 2026
17d ago
|
Insider Cluster
| $323.41 $322.60 | ▼ −0.25% | ▼ −0.49% | $355.69 (+9.98%) |
|
May 26, 2026
19d ago
|
Insider Cluster
| $332.43 $326.37 | ▼ −1.82% | ▼ −1.84% | $355.69 (+7.00%) |
|
May 26, 2026
19d ago
|
Insider Cluster
| $332.43 $326.37 | ▼ −1.82% | ▼ −1.84% | $355.69 (+7.00%) |
|
May 19, 2026
26d ago
|
Insider Cluster
| $293.92 $311.24 | ▲ +5.89% | ▲ +4.85% | $355.69 (+21.02%) |
|
May 15, 2026
4w ago
|
Insider Cluster
| $302.72 $295.27 | ▼ −2.46% | ▼ −2.40% | $355.69 (+17.50%) |
|
May 11, 2026
5w ago
|
Insider Cluster
| $318.37 $311.57 | ▼ −2.14% | ▼ −2.00% | $355.69 (+11.72%) |
US Market Status
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